Browsing Earth and Environmental Sciences Faculty Research, Publications and Presentations by Title
Now showing items 14-33 of 33
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Last Gasp of the Grenville Orogeny - Thermochronology of the Grenville Front Tectonic Zone Near Killarney, Ontario
We present U-Pb (titanite, zircon) and Ar-40/Ar-39 (hornblende, mica, K-feldspar) data from a transect across the western part of the Grenville Front Tectonic Zone (GFTZ) near Killarney, Ontario. High-grade metamorphic ... -
Messinian deep-water turbidites and glacioeustatic sea-level changes in the North Atlantic: Linkage to the Mediterranean Salinity Crisis
Our benthic foraminiferal data clearly indicate eight layers of deepwater turbidites during the Messinian (MTL 1-8) and one in the early Pliocene (PTL 1) in Ocean Drilling Program Leg 105, Site 646B. These deep-water ... -
Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution
The mid-Pliocene was a global warm period, preceding the onset of Quaternary glaciations. Here we use cosmogenic nuclide dating to show that a fossiliferous terrestrial deposit that includes subfossil trees and the ... -
Nature Appropriation and Associations with Population Health in Canada's Largest Cities
Earth is a finite system with a limited supply of resources. As the human population grows, so does the appropriation of Earth's natural capital, thereby exacerbating environmental concerns such as biodiversity loss, ... -
New insight into the South Tibetan detachment system: Not a single progressive deformation
Low-angle normal faults (LANF), typically regarded as accommodating crustal or lithospheric extension, may also form during lithospheric shortening. The best-studied system of syn-contractional LANFs is the South Tibetan ... -
Paleo-sea ice conditions of the Amundsen Gulf, Canadian Arctic Archipelago: Implications from the foraminiferal record of the last 200 years
Four boxcores were collected as part of the Canadian Arctic Exchange Shelf Study (CASES) in the Amundsen Gulf at water depths of 59 m to 600 m. Data from these cores help to develop a record of changes in the oceanographic ... -
Probing the depths of the India-Asia collision: U-Th-Pb monazite chronology of granulites from NW Bhutan
Rocks metamorphosed to high temperatures and/or high pressures are rare across the Himalayan orogen, where peak metamorphic conditions recorded in the exposed metamorphic core, the Greater Himalayan Sequence (GHS), are ... -
Radiocarbon evidence for annual growth rings in the deep-sea octocoral Primnoa resedaeformis
The deep-sea gorgonian octocoral Primnoa resedaeformis is distributed throughout the Atlantic and Pacific Oceans at depths of 65 to 3200 m. It has a 2-part skeleton of calcite and gorgonin. Towards the inside of the axial ... -
Recent Advances in Multichannel Seismic Imaging for Academic Research in Deep Oceanic Environments
No abstract available. -
Recent Seismic Studies at the East Pacific Rise 8 degrees 20 '-10 degrees 10 ' N and Endeavour Segment Insights into Mid-Ocean Ridge Hydrothermal and Magmatic Processes
As part of the suite of multidisciplinary investigations undertaken by the Ridge 2000 Program, new multichannel seismic studies of crustal structure were conducted at the East Pacific Rise (EPR) 8 degrees 20'-10 degrees ... -
Sources of nutrients to windward agricultural systems in pre-contact Hawai'i
Prior to European contact in 1778, Hawaiians developed intensive irrigated pondfield agricultural systems in windward Kohala, Hawai'i. We evaluated three potential sources of nutrients to windward systems that could have ... -
Stable isotopic composition of deep-sea gorgonian corals Primnoa spp.: a new archive of surface processes
The deep-sea gorgonian coral Primnoa spp. live in the Atlantic and Pacific Oceans at depths of 65 to 3200 m. They have an arborescent growth form with a skeletal axis composed of annual rings made from calcite and gorgonin. ... -
Stratigraphic model for glacial-eustatic Pennsylvanian cyclothems in highstand nearshore detrital regimes
Lower (distal) positions on gently sloping shelves (ramps) affected by Pennsylvanian glacial-eustatic sea-level fluctuation display classic marine transgressive-regressive cyclothems, which are separated by exposure surfaces ... -
Using small, temporary seismic networks for investigating tectonic deformation: Brittle deformation and evidence for strike-slip faulting in Bhutan
We processed data from a small, five-station temporary seismic network deployed from January 2002 until March 2003 within the Kingdom of Bhutan. We detected, associated, and located approximately 2,100 teleseismic, regional, ...